Wiper mechanism for intaglio plate printing machines



3 Sheets-Sheetr l `luly 21, 1931. c. r'. BRYAN 'IPERMECHANISM FOR INTAGLIO PLATE PRINTING MACHINES Filled oct. 31, 1929 July 21, 192.1.l c. F. BRYAN 1,815,700v

WIPER MECHANISM FOR INTAGLIO APLATE PRINTING MACHINES Filed oct. s1, v1929 3 Sheets-Sheet 2 I :l o o 1 I -i FIG.2.-

v July 21, 1931. c. F. BRYAN 1,815,700

WIPER MECH/ANISM FOR INTAGLIO PLATE PRINTING MACHINES A Filed`0ct. 3l. u1929 3 Sheets-Sheet 5 l l. "P u* 1 Y lNvENfoR L' Patented July 2.1, `1931 UNITED STATES PA'IENT4 oFFlc CHARLES F. BRYAN, OF NORTH PLAINFIELD, NEW JERSEY, ASSIGNOB-T E. HOE & O0., INC., OF NEW YORK, N. Y., A CORPORATION OF NEW YORK WIEB. :nommen Fon. INTAGLIO PLATE PRINTING MACHINES Application filed October .31, 1929. Serial No. 403,763.

This invention pertains to machines used for printing from an engraved or other intaglio plate, that is secured to a platen and presented first to a mechanism whereby it is 5 inked and then to a wiping mechanism that removes the ink from the surfaceof the plate which is then ready for the printing operation.

The improvements constituting the inven- 0 tion disclosed herein relate to certain elements of the mechanism for wiping or cleaning the plate, especially the mechanism for rotating the core on which the wiping cloth is wound after'it has been used, and the 1 5 mechanism for holding the padding material which presses the wiping cloth into contact with the plate.

An object ofthe invention is to provide an improved means for fastening the wiper :o ad used on a machine for printing from intaglio plates.

Another object-of theinvention is to provide an improved winding mechanism for rotating the core on which the wiper cloth :5 is wound.

- Another object of the invention is to provide an im roved winding mechanism for the wiper clot that will cause the cloth to b fed at a substantially constant rate.

sa e 1t is also anobject of theinvention to provide a wiping mechanism of generally impoved construction, whereby the device will simple, durable and inexpensive in con# struction, as well as convenient,Y practical,

5 5 serviceable and eiiicient in its use.

With` the foregoing and other objects view, which will appear as the description A roeeedsl, the inventlon ,resides in the comination and arrangement of parts, and in the .0 details of construction hereinafter described and claimed, it being understood that various changes in the precise embodiment of the invention' herein disclosed may be made within the scope of what is claimed without de 45 parting from the spirit of the invention. y The preferred embodiment of the invention is illustrated in the accompanying drawings, wherein: n i y ,1 re 1 is a side view-of a portion of an 5G intag o plate printing machine withthe side.

frame broken away, showing the oscillating wiper support and the mechanism for feeding the web of wiper fabric;

Figure 2 isa view of a portion of the wiper support as seen in the direction of arrow 2 of Figure l;

Figure 3 1s a plan view partly insection showing a portion of the wiper support asv seei in the direction of arrow 3 of Figure 2; an

Figure 4 is a view partly broken away and partly in section showing the mechanism for l controlling the operation of the core on which thedwiping cloth is wound after it has been usev i Referring to the drawings 11 and 11' indi.- cate side frames of a printing machine that Ais adapted to print from an engraved plate 12, that is suitably secured to a platen 12', which is moved on ways suitably supported by means secured to the frame 11 and 11'. One of these ways is shown at 13.

It is generally understood vthat in this class of rinting, the plate is inked by suitable mec anism and the excess ink is then removed Z6 from the surface of the plate by one or more wipers which engage the plate as itis moved along the ways.

The wiper mechanism shown herein includes awiper support indicated generally at 14, which has a body/member 15 with rojecting lugs 16. One edge of a wiper (pa 17, which may consist of felt overlai with leather, is clamped between bars 18 and 19, which are lsecured to the lugs 16, while the vopposite edge of the ad is similarly clametd .between bars 21 an 22, that are secure tightening members or arms. 23, pivoted at 24 in brackets 25, secured to the body member 15. Screws 26, threaded into the arms 23,

abut against the side of the body member 15,

and provide means for drawing the wiper. pad- 17 tightly against thefaceof the body member.

It will be noted that the arrangement of' the lugs 16y and the tightenin arms 23 is such that the wiper pad is not nt abruptly over the edge of the wi er body. -In the forms of tightening mec anism heretofore ueedthe'wiper pad 1s bent at an angle of 90 1 or more and there s'a tendency for it to bow away from the 'face of the wiper sup ort or body member. This diiculty is avoided iny the. arrangement herein disclosed.

. 5' The wiper body member 15 is fitted to slide on a crossbar 27 and is held thereto by plates 28 secured to the body 15 by bolts 29. The cross bar 27 'is adjustably secured to ,brackets 31, vwhich are secuedto the :frames lo 11 and 11', by bolts 32. Bolts 33 ass through `elongated holes 34 in the cross ar and are screwed into the brackets 31. Screw studs 35 are secured to the cross bar and Vpass Athrough holes in lu f 36, of brackets` 31.

15 They are tted with a justing nuts 37 and 38,

thus providing means for adjusting the pr'eswiper bears againstathe I sure with which the plate 12.

Means for oscillatingA the wiper traiisverise@ zo ly of the machine, may be provided by a not shown, that is connected to a r11lllllillfi;V

,30 is` secured by a hingeplate 46 and theclamp screw 47, which-i when tightened 'act 'tp .restrain the rotation of the roll. l The wiper web 48 is led from thei'oll 44, around the roller Y49 which is rotatably supand around the roller 51, which is rotatably supported in brackets 52, secured to the wiper body 15.. The wiper-web'tlien passes across the wi r pad 17 and around the roller 53,

o which is similarly supported in brackets 54,

also secured to the wiper body 15. The wiper web is then carried around rollers and 55 supported in the frame and around a control roller 56, which is supported in arms 57 and 57', that are keyed to the shaft 58, which is rotatably supported inthe frames 11 and 11. L After ssing around the roller 56'tlie a wi r web-is wound on the roll 59. This the frame 11. The vrod 68,7has a head 69,`

pivotally connected to the arm 66, and is provided with a sprin 71, which abuts `ainst so a popper 72, secure to the frame 11, an thus biases the arm 66 in a clockwise direction, the

travel being limited by the lock nuts 73.

s ll`e1rAIods7fg, that is pivotally Vconnected to the twoarm leve'75,`is-reciprocated by a cam c: 0r other suitable means no t shown, and is 'ported in bearings formed Yby the frame 11 94 and meshes with the roll is constantly increasing in size.

down by the spring 81, which abuts against 79 the collar 82, that is screwed on the end of the rod. 4 Y

The collar 79, is pivotally connected at 83 with a belt crank lever 84, that is pivoted on the stud l85, secured to the frame 11. The opposite arm of the belt crank lever is slotted at 86 for a clamp screw 87, havin a nut 88. Alink 89, turns on the screw and is alsovpivotally connected to an Varm 91, 'carrying -a awl 92, which engages afratchet wheel 93,A eyed toa shaft 94, which is rotatably supand the bracket 95, which is secured to the frame. The arm 91 is loose on theshaft 94,

and oscillation of said arm by the movement Y of the lever' 84, acts to rotate the ratchet wheel 93., A pawl 96, acts to hold the ratchet wheel 93 from turning backwards on the idle stroke of the arm 91. A gear97, is keyed to theshaft v gear 98, secured to the Shaft 61. l I lV I t will be understood that the spring 71 acting throughv the levers 66 and 64 causes the roller 56 to be pressed against the periphery of the roll 59',4 and as the -material is wound on the roll, its increasing diameter causes the arm 66 to be turned counter-clockc l wise.Tliestop'99onfaceoftliearm66,pro- 35 portedm bearings in the frames 11 and 11 101 of the it as shown n'Figure 1. v

In operation, downward motion of the rod, 74, causes the collar 78 to engage the collar 79 and push it upward, thus moving the operating ace 101 away from the stop 99, and simultaneously turning the ratchet wheel 93, and winding up the fabric on the roll 59. As the roll 59 increases in diameter the stop face 99 is moved toward the left and the lever face 101 moved with it, resultingjin decreasing the length of stroke of the arm 91 and. in consequence turning the shaft 61 through a smaller arc.

.erly proportoning the parts, substantially the same length of the wiper web mafy 'be takenh up on the roll at each stroke o the ratchet lever even though the diameter of the 12o The distance that the wiper web 'is ad- .vanced by each feeding stroke maybe adjusted by moving the screw 87 'in' the slot 86. WhatIclaimpis: Y.' y 1 'In al wipermechanism of the class de- 125 scribed, a roll from which a web of wiper fabric is drawn, a core on which the fabric is 1 rewound into a roll, intermittently operated advancing means to rotate said core, and a control member bearing the surface 13o of the rewound roll and acting to regulate the movement ofthe advancing means.

2.' In .a wiper mechanism of the class described, a roll v:'crom' which a web of wiper fabricis-drawn, a core on which thefabric is rewound into a roll, a reciprocating member acting to rotate said core, a control member bearing against the surface of the rewound roll, and a stop moved by the action of the control member to limit the stroke of said reciprocating member.

3. In a wiper mechanism of the class descrbed, a roll from'which a web of kwiper fabric is drawn, a core on which the fabric is rewound into a roll, a reciprocating member connected to a ratchet which acts to rotate said core,` a roller supported on Swingin arms and bearing a amst the rewound rol?, and means governo by the position of the roller, for regulating the motion of the ratchet.

In testimony whereof, I aix msi CHARLES F. R

ature. AN. 

